Mil-spec diameter receiver extension tube uses an innovative attachment system that eliminates the need for a castle nut. Automatically indexes the tube during installation to keep it perfectly aligned, and resists working loose over time. Provides six locking positions for the stock’s lock pin, while white position numbers on the top are visible through the lock pin access hole in most stocks. Two sockets for quick-detach, pushbutton sling swivels are machined into the front of the tube. A lip at the bottom front of the tube extends into the receiver to support the carrier and prevent the “carrier tilt” that occurs on some guns fitted with gas piston conversion systems. Machined from a single piece of 7075 aluminum billet, the tube has exterior grooves running its entire length to prevent dirt or debris from impairing buttstock movement. A drain hole in the underside allows water to clear if the rifle gets submerged. A “dead blow” shock absorber inside the tube slows carrier speed by as much as 10% to help reduce felt recoil. Extruded model - Extruded aluminum construction instead of CNC machined. Location numbers are white on the CNC machined model, and not colored on the extruded model.
SPECS:
7075 aluminum, hardcoat anodized, matte black. 75⁄8" (19.3cm) long, 1.14" O. D. 4.9 oz. (141g) weight. Includes tube, end plate, hex head wrenches, and instructions.
Catalog page 494